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Crawl4AI vs Arize Phoenix
Side-by-side comparison of features, pricing, and ratings
Open-source LLM-friendly web crawler & scraper for AI agents and RAG pipelines.
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Free
Freemium
Plans
$0/mo (MIT)
Free
Contact for pricing
Popularity
2.8k views
7.3k views
Skill Level
Intermediate
Intermediate
API Available
Platforms
CLIAPI
WebAPICLI
Categories
⚙️ Developer Infrastructure
⚙️ Developer Infrastructure
Features
Clean Markdown generation for RAG/LLM pipelines
Structured extraction via CSS, XPath, or LLM
Adaptive crawling with information foraging
Anti-bot detection with automatic proxy escalation (v0.8.5)
Shadow DOM flattening (v0.8.5)
Crash recovery for deep crawls (v0.8.0)
Prefetch mode for fast URL discovery (v0.8.0)
Parallel crawling and chunk-based extraction
Advanced browser control hooks, proxies, stealth
Session management and authentication hooks
Lazy loading and virtual scroll handling
Cache modes and local file support
LLM-free and LLM-based extraction strategies
Chunking and clustering strategies for content
Multi-URL crawling and crawl dispatcher
Distributed tracing for LLM agents
Capture prompts, retrievals, tool calls, outputs
LLM-as-judge evaluation
Human annotations on traces
Create datasets from traces
Run experiments to compare changes
Prompt IDE for iteration
AI engineering agent PXI
OpenTelemetry-native instrumentation
Self-host locally, Docker, or Kubernetes
Cloud instances (free tier available)
Vendor agnostic: any model or framework
ELv2 open-source license
3M+ downloads, 10k+ GitHub stars
Community Slack support
Integrations
GitHub
Discord
Claude
Cursor
Windsurf
LlamaIndex
LangChain
OpenAI
NVIDIA NeMo
Hugging Face
OpenTelemetry
Kubernetes
Docker
Python SDK